47277457 has 2 divisors, whose sum is σ = 47277458. Its totient is φ = 47277456.

The previous prime is 47277437. The next prime is 47277479. The reversal of 47277457 is 75477274.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40947201 + 6330256 = 6399^2 + 2516^2 .

It is a cyclic number.

It is not a de Polignac number, because 47277457 - 2¹¹ = 47275409 is a prime.

It is not a weakly prime, because it can be changed into another prime (47277437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23638728 + 23638729.

It is an arithmetic number, because the mean of its divisors is an integer number (23638729).

Almost surely, 2^47277457 is an apocalyptic number.

It is an amenable number.

47277457 is a deficient number, since it is larger than the sum of its proper divisors (1).

47277457 is an equidigital number, since it uses as much as digits as its factorization.

47277457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 384160, while the sum is 43.

The square root of 47277457 is about 6875.8604552449. The cubic root of 47277457 is about 361.5913528137.

The spelling of 47277457 in words is "forty-seven million, two hundred seventy-seven thousand, four hundred fifty-seven".